From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8A247C25B06 for ; Sun, 14 Aug 2022 15:36:45 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240713AbiHNPgn (ORCPT ); Sun, 14 Aug 2022 11:36:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52368 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240926AbiHNPfx (ORCPT ); Sun, 14 Aug 2022 11:35:53 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4D7721659B; Sun, 14 Aug 2022 08:31:17 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 7D4F8B80B77; Sun, 14 Aug 2022 15:31:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1B224C4347C; Sun, 14 Aug 2022 15:31:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1660491075; bh=mr9tRLqQ8X+aGtXimse11oHRXOJPJJGTmgtdeuO+DJw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=M9vn/6Wd5wdsXN/xuTvTQ9nYtAOatjkOuaca9GeCq2Pp5yClaiSHzplciUf8Klxf6 i/j43apPXjV4vderG4mM84JUD0J7NqEqDEhSw4pKtHexwo1SaCISGoI+WS60zw/hd7 nGD6qylCVwCOQSnb9kxcMlK8PHAw5b1yXZwL/4lUy74jlE67tuMv8nLTq8/jYJ4gaO M8c6s0spIhZUlOt1IyIh1Xfw0ERRasceaVjSYWDisIGIarHR1o5wKRlllLhiGm0yfi P0UDlWBLZm65w9svV04Ka+x+0lWhvngGLxeRZTbkmV2KZP0ZGiAIKw3nRMkBY65J58 h5w+g1t8xoVWg== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Mike Christie , Nilesh Javali , Lee Duncan , "Martin K . Petersen" , Sasha Levin , cleech@redhat.com, jejb@linux.ibm.com, open-iscsi@googlegroups.com, linux-scsi@vger.kernel.org Subject: [PATCH AUTOSEL 5.18 18/56] scsi: iscsi: Fix HW conn removal use after free Date: Sun, 14 Aug 2022 11:29:48 -0400 Message-Id: <20220814153026.2377377-18-sashal@kernel.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220814153026.2377377-1-sashal@kernel.org> References: <20220814153026.2377377-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: Mike Christie [ Upstream commit c577ab7ba5f3bf9062db8a58b6e89d4fe370447e ] If qla4xxx doesn't remove the connection before the session, the iSCSI class tries to remove the connection for it. We were doing a iscsi_put_conn() in the iter function which is not needed and will result in a use after free because iscsi_remove_conn() will free the connection. Link: https://lore.kernel.org/r/20220616222738.5722-2-michael.christie@oracle.com Tested-by: Nilesh Javali Reviewed-by: Lee Duncan Reviewed-by: Nilesh Javali Signed-off-by: Mike Christie Signed-off-by: Martin K. Petersen Signed-off-by: Sasha Levin --- drivers/scsi/scsi_transport_iscsi.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c index 5d21f07456c6..6e73f14b9749 100644 --- a/drivers/scsi/scsi_transport_iscsi.c +++ b/drivers/scsi/scsi_transport_iscsi.c @@ -2143,8 +2143,6 @@ static int iscsi_iter_destroy_conn_fn(struct device *dev, void *data) return 0; iscsi_remove_conn(iscsi_dev_to_conn(dev)); - iscsi_put_conn(iscsi_dev_to_conn(dev)); - return 0; } -- 2.35.1